EP3073011A1 - Verfahren zur herstellung von einem absorbierenden blatt mit erhöhtem nass/trocken cd verhältnis - Google Patents

Verfahren zur herstellung von einem absorbierenden blatt mit erhöhtem nass/trocken cd verhältnis Download PDF

Info

Publication number
EP3073011A1
EP3073011A1 EP16169404.7A EP16169404A EP3073011A1 EP 3073011 A1 EP3073011 A1 EP 3073011A1 EP 16169404 A EP16169404 A EP 16169404A EP 3073011 A1 EP3073011 A1 EP 3073011A1
Authority
EP
European Patent Office
Prior art keywords
debonder
furnish
percent
fiber
web
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16169404.7A
Other languages
English (en)
French (fr)
Other versions
EP3073011B1 (de
Inventor
Bruce J. Kokko
Steven L. Edwards
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GPCP IP Holdings LLC
Original Assignee
Georgia Pacific Consumer Products LP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Georgia Pacific Consumer Products LP filed Critical Georgia Pacific Consumer Products LP
Priority to PL16169404T priority Critical patent/PL3073011T3/pl
Publication of EP3073011A1 publication Critical patent/EP3073011A1/de
Application granted granted Critical
Publication of EP3073011B1 publication Critical patent/EP3073011B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D21H21/20—Wet strength agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/14—Making cellulose wadding, filter or blotting paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/005—Mechanical treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Definitions

  • the present invention relates to absorbent sheet of the class used to make paper towel.
  • the present invention relates to a method of making such products with high relative CD wet tensile including, in one embodiment, treating softwood Kraft papermaking fiber with a debonder at consistencies of greater than 2 percent and subsequently adding a wet strength resin.
  • Especially preferred products have wet/dry CD tensile ratios of greater than 30 percent, as well as MD/CD dry tensile ratios of less than 1.
  • the dry strength of a paper towel or tissue is often dictated by the required wet strength of the product in-use.
  • the MD dry tensile may be higher than needed in order to provide sufficient CD wet strength which, as one of skill in the art will appreciate adversely affects softness of the towel.
  • wet strength resins in combinations, for example, such as a cationic wet strength resin and a hydrophobically modified anionic polyelectrolyte. See United States Patent No. 7,041,197 to Kokko et al.
  • the CD wet/dry ratio tensile is a convenient parameter by which to characterize absorbent paper products, it being noted that higher wet/dry CD tensile ratios are desirable, for example, in order to provide for softer paper toweling. It has been disclosed in United States Patent No. 6,461,476 to Goulet et al . that the wet/dry tensile of throughdried tissue and towels can be increased by treating the pulp with a debonder, a wet strength agent and a dry strength agent.
  • Chemical debonders also referred to as softeners, are frequently employed in the manufacture of paper tissue and towel.
  • One preferred debonder composition includes a softener system comprising an ion-paired mixture of an anionic surfactant and a cationic quaternary ammonium compound. Details are seen in United States Patent No. 6,245,197 to Oriaran et al.
  • debonders are added to the papermaking furnish at relatively low fiber consistencies, such as are seen in a stock chest or a machine chest.
  • United States Patent No. 5,785,813 to Smith et al. note Figure 1 thereof wherein hardwood fiber is treated with debonder.
  • United States Patent No. 5,501,768 to Hermans et al. Example 9, Col. 13 wherein kraft hardwood fiber is treated with debonder in a shaft disperser.
  • Debonder is added to the furnish at relatively high consistency, upstream of a machine chest, in a pulper for example, and prior to diluting the furnish and pumping it to a headbox.
  • Permanent wet strength resin is preferably added to the furnish subsequent to the debonder treatment.
  • Overall properties are further enhanced by providing base sheet with a relatively low MD/CD dry tensile ratio and optionally providing a dry strength resin to the furnish.
  • H-bonds which is one of the weaker chemical bonds
  • Dry tensile will further increase as one adds other stronger bonds such as ionic and covalent bonds into these contact regions, so that b increases, but the gain will be small compared to the dry strength attributed to the plethora of H-bonding.
  • all these H-bonds are broken and only those bonds resistant to water will remain to hold the structure together. The measured tensile strength under these conditions is the wet tensile.
  • debonder functions to lower dry strength in disproportion to wet tensile by reducing relative bonding while minimally impacting shear bond strength; or in other words, debonder affects fiber surface energy and not the microcomposite responsible for the wet strength bond.
  • Increasing debonder dosage creates opportunity for improving wet/dry strength ratios; however, relatively high dosage levels have not previously been practical as noted above.
  • Figure 1 is a plot of wet breaking length versus dry breaking length wherein it is seen that wet/dry CD tensile ratios were increased 60 percent and more through the use of debonder treatment at a pulper.
  • Figure 2 is another plot of wet breaking length versus dry breaking length for handsheets. It is seen in Figure 2 , for example, that a refined towel substrate with a dry breaking length of 5 km or so will have a wet breaking length of approximately 0.9 km.
  • the wet breaking length at the same dry strength was increased to 1.4 km or 56 percent.
  • the MD tensiles necessary for a product of a predetermined CD wet strength can be further reduced by controlling the MD/CD dry tensile ratio by way of the jet/wire velocity delta and crepe as will be appreciated from Figure 3 , which is a plot of MD/CD dry tensile ratio versus jet/wire velocity delta. It is seen in Figure 3 that the MD/CD tensile ratios exhibit minima at delta values slightly less than 200 fpm (61 m/min) and that a wet-crepe, fabric crepe process is less sensitive to velocity delta changes and is more readily controlled over a greater range than a conventional wet-press/dry crepe process as further discussed herein. In other words, the relative CD strength of the product may be greatly increased by controlling the jet/wire velocity delta.
  • Test specimens are conditioned for 2 hours at 50 percent relative humidity and 23°C ⁇ 1°C (73.4°F ⁇ 1.8°F) unless otherwise indicated.
  • Water Absorbency Rate or WAR is measured in accordance with TAPPI method T-432 cm-99.
  • Water absorbency rate is the time it takes for a sample to absorb a 0.1 gram droplet of water disposed on its surface by way of an automated syringe.
  • the test specimens are preferably conditioned at 23° C ⁇ 1° C (73.4 ⁇ 1,8°F) at 50 percent relative humidity.
  • 4 3x3 inch (7.62x7.62 cm) test specimens are prepared. Each specimen is placed in a sample holder such that a high intensity lamp is directed toward the specimen.
  • 0.1 ml of water is deposited on the specimen surface and a stop watch is started. When the water is absorbed, as indicated by lack of further reflection of light from the drop, the stopwatch is stopped and the time recorded to the nearest 0.1 seconds. The procedure is repeated for each specimen and the results averaged for the sample.
  • Basis weight refers to the weight of a 3000 ft 2 ream (278.7 m 2 ream) of product. Consistency refers to percent solids of a nascent web, for example, calculated on a bone dry basis. "Air dry” means including residual moisture, by convention up to about 10 percent moisture for pulp and up to about 6 percent for paper. A nascent web having 50 percent water and 50 percent bone dry pulp has a consistency of 50 percent.
  • Base sheet refers to a unitary cellulosic sheet as manufactured by a papermachine. Base sheets may be layered; however, they have a unitary structure not readily delaminated. A “ply” of a finished product refers to base sheet incorporated into the product.
  • cellulosic “cellulosic sheet” and the like is meant to include any product incorporating fiber having cellulose as a major constituent.
  • Papermaking fibers include virgin pulps or recycle (secondary) cellulosic fibers or fiber mixes comprising cellulosic fibers.
  • Fibers suitable for making the webs of this invention include: nonwood fibers, such as cotton fibers or cotton derivatives, abaca, kenaf, sabai grass, flax, esparto grass, straw, jute hemp, bagasse, milkweed floss fibers, and pineapple leaf fibers; wood fibers such as those obtained from deciduous and coniferous trees, including softwood fibers, such as northern and southern softwood kraft fibers; and hardwood fibers, such as eucalyptus, maple, birch, aspen, or the like.
  • Papermaking fibers can be liberated from their source material by any one of a number of chemical pulping processes familiar to one experienced in the art, including sulfate, sulfite, polysulfide, soda pulping, etc.
  • the pulp can be bleached if desired by chemical means including the use of chlorine, chlorine dioxide, oxygen and so forth.
  • the products of the present invention may comprise a blend of conventional fibers (whether derived from virgin pulp or recycle sources) and high coarseness lignin-rich tubular fibers, such as bleached chemical thermomechanical pulp (BCTMP).
  • BCTMP bleached chemical thermomechanical pulp
  • "Furnishes” and like terminology refers to aqueous compositions including papermaking fibers, wet strength resins, debonders, and the like for making paper products. Synthetic fibers may also be included in the furnish.
  • Kraft softwood fiber is low yield fiber made by the well known Kraft (sulfate) pulping process from coniferous material and includes northern and southern softwood Kraft fiber, Douglas fir Kraft fiber and so forth.
  • Kraft softwood fibers generally have a lignin content of less than 5 percent by weight, a length weighted average fiber length of greater than 2 mm, as well as an arithmetic average fiber length of greater than 0.6 mm.
  • Kraft hardwood fiber is made by the Kraft process from hardwood sources, i.e., eucalyptus and also has generally a lignin content of less than 5 percent by weight.
  • Kraft hardwood films are shorter than softwood fibers, typically having a length weighted average fiber length of less than I mm and an arithmetic average length of less than 0.5 mm or less than 0.4 mm.
  • Fiber length can be measured by any suitable means.
  • a preferred system is the OpTest Fiber Quality Analyzer (FQA) from OpTest Equipment, Hawkesbury, Ontario, Canada, Model No. Code LDA 96.
  • the FQA measures individual fiber contour and projected lengths by optically imaging fibers with a CCD camera and polarized infrared light.
  • Recycle fiber which is predominantly low yield fiber may be identified by lignin content. Recycle fiber having a lignin content of less than 7.5 percent by weight is presumed to be predominantly low yield fiber as opposed to groundwood.
  • the "compactively dewatering the web or furnish” refers to mechanical dewatering by wet-pressing on a dewatering felt, for example, in some embodiments by use of mechanical pressure applied continuously over the web surface, as in a nip between a press roll and a press shoe wherein the web is in contact with a papermaking felt.
  • the terminology "compactively dewatering” is used to distinguish processes wherein the initial dewatering of the web is carried out largely by thermal means as is the case, for example, in United States Patent No. 4,529,480 to Trokhan and United States Patent No. 5,607,551 to Farrington et al . noted above.
  • Compactively dewatering a web thus refers, for example, to removing water from a nascent web having a consistency of less than 30 percent or so by application of pressure thereto and/or increasing the consistency of the web by about 15 percent or more by application of pressure thereto.
  • "Wet-press”, “wet-pressing” and like terminology refers to processes and machinery which include a compactive dewatering step or related equipment.
  • a wet web is wet-pressed onto the surface of a rotating cylinder where the consistency is lowered substantially in connection with transfer, for example, where the web is transferred from a felt to a Yankee cylinder in a CWP process or the web is transferred from a felt to a transfer cylinder in a FC process.
  • Both the CWP and FC processes described herein are wet-press processes.
  • Softener or debonder add-on is calculated as the weight of "as received" commercial debonder composition per ton of bone dry fiber when using a commercially available debonder composition, without regard to additional diluents or dispersants which may be added to the composition after receipt from the vendor.
  • Debonder compositions are typically comprised of cationic or anionic amphiphilic compounds, or mixtures thereof (hereafter referred to as surfactants) combined with other diluents and non-ionic amphiphilic compounds; where the typical content of surfactant in the debonder composition ranges from about 10 wt% to about 90 wt%.
  • Diluents include propylene glycol, ethanol, propanol, water, polyethylene glycols, and nonionic amphiphilic compounds. Diluents are often added to the surfactant package to render the latter more tractable (i.e., lower viscosity and melting point).
  • Non-ionic amphiphilic compounds in addition to controlling composition properties, can be added to enhance the wettability of the debonder, where both debonding and maintenance of absorbency properties are critical to the substrate that a debonder is applied.
  • the nonionic amphiphilic compounds can be added to debonder compositions to disperse inherent water immiscible surfactant packages in water streams, such as encountered during papermaking.
  • the nonionic amphiphilic compound, or mixtures of different non-ionic amphiphilic compounds as indicated in United States Patent No. 6,969,443 to Kokko , can be carefully selected to predictably adjust the debonding properties of the final debonder composition.
  • the debonder add-on includes amphiphilic additives such as nonionic surfactant, i.e. fatty esters of polyethylene glycols and diluents such as propylene glycol, respectively, up to about 90 percent by weight of the debonder composition employed. except, however that diluent content of more than about 30 percent by weight of non-amphiphilic diluent is excluded for purposes of calculating debonder composition add-on per ton (per mton) of fiber. Likewise, water content is excluded in calculating debonder add-on.
  • amphiphilic additives such as nonionic surfactant, i.e. fatty esters of polyethylene glycols and diluents such as propylene glycol, respectively, up to about 90 percent by weight of the debonder composition employed. except, however that diluent content of more than about 30 percent by weight of non-amphiphilic diluent is excluded for purposes of calculating debonder composition add-on per to
  • a “Type C” quat refers to an imidazolinium surfactant, while a “Type C” debonder composition refers to a debonder composition which includes Type C quat.
  • a preferred Type C debonder composition includes Type C quat, and anionic surfactant as disclosed in United States Patent No. 6,245,197 blended with nonionic amphiphilic components and other diluents as is disclosed in United States Patent No. 6,969,443 . The disclosures of the ⁇ 197 and '443 patents are incorporated herein by reference in their entireties.
  • FC means a fabric crepe process of the class discussed in detail in connection with Figure 5 or a product produced by that technology as the context indicates.
  • TAD refers to products which are throughdried.
  • Fpm refers to feet per minute (“m/min” refers to meters per minute) while “consistency” refers to the weight percent fiber of the web.
  • Freeness or CSF is determined in accordance with TAPPI Standard T 227 OM-94 (Canadian Standard Method).
  • Jet/wire velocity delta or like terminology refers to the difference in speed between the headbox jet issuing from a headbox and the forming wire or fabric speed in the MD; jet velocity-wire velocity delta is typically expressed in fpm (m/min). In cases where a pair of forming fabrics are used, the speed of the fabric advancing the web in the machine direction is used to calculate jet/wire velocity delta.
  • MD machine direction
  • CD cross-machine direction
  • Nip parameters include, without limitation, nip pressure, nip width, backing roll hardness, fabric approach angle, fabric takeaway angle, uniformity, nip penetration and velocity delta between surfaces of the nip.
  • Nip width means the MD length over which the nip surfaces are in contact.
  • Predominantly means more than 50 percent by weight of the named species unless mole percent is specified. Papermaking fiber from which a product is made is "predominantly” softwood fiber if over 50 percent by weight of fiber in the product is softwood fiber (bone dry).
  • a translating transfer surface refers to the surface from which the web is creped into the creping fabric.
  • the translating transfer surface may be the surface of a rotating drum as described hereafter, or may be the surface of a continuous smooth moving belt or another moving fabric which may have surface texture and so forth.
  • the translating transfer surface needs to support the web and facilitate the high solids creping as will be appreciated from the discussion which follows.
  • Calipers and/or bulk reported herein may be 1, 4 or 8 sheet calipers.
  • the sheets arc stacked and the caliper measurement taken about the central portion of the stack.
  • the test samples are conditioned in an atmosphere of 23° ⁇ 1.0°C (73.4° ⁇ 1.8°F) at 50 percent relative humidity for at least about 2 hours and then measured with a Thwing-Albert Model R9-II-JR or Progage Electronic Thickness Tester with 2-in (50.8-mm) diameter anvils, 539 ⁇ 10 grams dead weight load, and 0.231 in./sec (0.59 cm/sec) descent rate.
  • each sheet of product to be tested must have the same number of plies as the product is sold.
  • each sheet to be tested must have the same number of plies as produced off the winder.
  • base sheet testing off of the papermachine reel single plies must be used. Sheets are stacked together aligned in the MD.
  • handsheets single sheet caliper is used. On custom embossed or printed product, try to avoid taking measurements in these areas if at all possible. Bulk may also be expressed in units of volume/weight by dividing caliper by basis weight.
  • Dry tensile strengths (MD and CD), stretch, ratios thereof, break modulus, stress and strain are measured with a standard Instron test device or other suitable elongation tensile tester which may be configured in various ways, typically using 3 or 1 inch (7.62 or 2.54 cm) wide strips of tissue or towel, conditioned for 2 hours at 50 percent relative humidity and 23°C ⁇ 1°C (73.4°F ⁇ I.8°F), with the tensile test run at a crosshead speed of 2 in/min (5.08 cm/min). Tensile strength is typically reported in breaking length (km) or g/3" (g/cm).
  • a tensile property is a "dry" property at break (i.e., peak value).
  • Tensile ratios are simply ratios of the values determined by way of the foregoing methods. Dry tensile ratio refers to the MD/CD dry tensile ratio unless otherwise stated. Tensile strength is sometimes referred to simply as tensile.
  • Finch Cup wet tensile is measured using a three-inch (7.62 cm) wide strip of sheet that is folded into a loop, clamped in a special fixture termed a Finch Cup, then immersed in water.
  • the Finch Cup which is available from the Thwing-Albert Instrument Company of Philadelphia, Pa., is mounted onto a tensile tester equipped with a 2.0 pound (0.907 kg) load cell with the flange of the Finch Cup clamped by the tester's lower jaw and the ends of the specimen loop clamped into the upper jaw of the tensile tester.
  • the sample is immersed in water that has been adjusted to a pH of 7.0 + or - 0.1 and the tensile is tested after a 5 second immersion time.
  • the results are expressed in breaking length (km) or g/3" (g/cm), dividing by two to account for the loop as appropriate.
  • wet/dry tensile ratios are expressed in percent by multiplying the wet/dry ratio by 100.
  • wet/dry CD tensile ratio is the most relevant.
  • "wet/dry ratio" or like terminology refers to the wet/dry CD tensile ratio unless clearly specified otherwise.
  • MD and CD values are equivalent.
  • Belt Crepe Ratio or “Fabric Crepe Ratio” is an expression of the speed differential between a creping belt or creping fabric and the forming wire, and typically calculated as the ratio of the web speed immediately before creping and the web speed immediately following creping, because the forming wire and transfer surface are typically, but not necessarily, operated at the same speed:
  • Line crepe (sometimes referred to as overall crepe), reel crepe and so forth are similarly calculated.
  • PLI or pli means pounds force per linear inch. (kg force per linear centimeter (kglcm)).
  • Puscy and Jones (P+J) hardness (indentation), sometimes referred to simply as P+J. is measured in accordance with ASTM D 531, and refers to the indentation number (standard specimen and conditions).
  • Velocity delta means a difference in linear speed
  • the present invention may employ debonders including amido amine salts derived from partially acid neutralized amines.
  • debonders including amido amine salts derived from partially acid neutralized amines.
  • Quasoft 202-JR is a suitable material, which includes surfactant derived by alkylating a condensation product of oleic acid and diethylenetriamine.
  • a minor proportion (e.g., about 10 percent) of the resulting amido amine cyclize to imidazoline compounds.
  • the compositions as a whole are pH-sensitive. Therefore, in the practice of the present invention with this class of chemicals, the pH in the head box should be approximately 6 to 8, more preferably 6.5 to 8 and most preferably 7 to 8.
  • Quaternary ammonium compounds such as dialkyl dimethyl quaternary ammonium salts are also suitable particularly when the alkyl groups contain from about 10 to 24 carbon atoms. These compounds have the advantage of being relatively insensitive to pH.
  • Biodegradable softeners can be utilized. Representative biodegradable cationic softeners/debonders are disclosed in United States Patent Nos. 5.312,522 ; 5,415,737 ; 5,262,007 ; 5,264,082 ; and 5,223,096 , all of which are incorporated herein by reference in their entirety.
  • the compounds are biodegradable diesters of quaternary ammonia compounds, quaternized amine-esters, and biodegradable vegetable oil based esters functional with quaternary ammonium chloride and diester dierucyidimethyl ammonium chloride and are representative biodegradable softeners.
  • Debonder compositions may include dialkyldimethyl-ammonium salts of the formula: bis-dialkylamidoammonium salts of the formula: as well as dialkylmethylimidazolinium salts (Type C quats) of the formula: wherein each R may be the same or different and each R indicates a hydrocarbon chain having a chain length of from about twelve to about twenty-two carbon atoms and may be saturated or unsaturated; and wherein said compounds are associated with a suitable anion.
  • One suitable salt is a dialkyl-imidazolinium compound and the associated anion is methylsulfate.
  • Exemplary quaternary ammonium surfactants include hexamethonium bromide, tetraethylammonium bromide, lauryl trimethylammonium chloride, dihydrogenated tallow dimethylammonium methyl sulfate, oleyl imidazolinium, and so forth.
  • a nonionic surfactant component such as PEG diols and PEG mono or diesters of fatty acids, and PEG mono or diethers of fatty alcohols may be used as well, either alone or in combination with a quaternary ammonium surfactant.
  • Suitable compounds include the reaction product of a fatty acid or fatty alcohol with ethylene oxide, for example, a polyethylene glycol (PEG) diester or PEG diether, respectively.
  • nonionic surfactants examples include polyethylene glycol dioleate, polyethylene glycol dilaurate, polypropylene glycol dioleate, polypropylene glycol dilaurate, polyethylene glycol monooleate, polyethylene glycol monolaurate, polypropylene glycol monooleate and polypropylene glycol monolaurate and so forth. Further details may be found in United States Patent No. 6,969,443 of Bruce Kokko (Attorney Docket 2130; FJ-99-12), entitled "Method of Making Absorbent Sheet from Recycle Furnish".
  • WSR permanent wet strength resin
  • Suitable permanent wet strength agents are known to the skilled artisan.
  • a comprehensive but non-exhaustive list of useful strength aids include urea-formaldehyde resins, melamine formaldehyde resins, glyoxylated polyacrylamide resins, polyamide-epichlorohydrin resins and the like.
  • Thermosetting polyacrylamides are produced by reacting acrylamide with diallyl dimethyl ammonium chloride (DADMAC) to produce a cationic polyacrylamide copolymer which is ultimately reacted with glyoxal to produce a cationic cross-linking wet strength resin, glyoxylated polyacrylamide.
  • DMDMAC diallyl dimethyl ammonium chloride
  • a cationic polyacrylamide copolymer which is ultimately reacted with glyoxal to produce a cationic cross-linking wet strength resin, glyoxylated polyacrylamide.
  • acrylamide/-DADMAC/glyoxal can be used to produce cross-linking resins, which are useful as wet strength agents.
  • dialdehydes can be substituted for glyoxal to produce thermosetting wet strength characteristics.
  • polyamide-epichlorohydrin permanent wet strength resins an example of which is sold under the trade names Kymene 557LX and Kymene 557H by Hercules Incorporated of Wilmington, Delaware and Amres® from Georgia-Pacific Resins, Inc. These resins and the process for making the resins are described in United States Patent No. 3,700,623 and United States Patent No. 3,772,076 each of which is incorporated herein by reference in its entirety.
  • Suitable dry strength agents include starch, guar gum, polyacrylamides, carboxymethyl cellulose (CMC) and the like.
  • CMC carboxymethyl cellulose
  • carboxymethyl cellulose an example of which is sold under the trade name Hercules CMC, by Hercules Incorporated of Wilmington, Delaware.
  • An absorbent paper web is typically made commercially by dispersing papermaking fibers and other papermaking components noted above into an aqueous furnish (slurry) and depositing the aqueous furnish onto the forming wire of a papermaking machine, typically by way of a jet issuing from a headbox.
  • Any suitable forming scheme might be used.
  • an extensive but non-exhaustive list in addition to Fourdrinier formers includes a crescent former, a C-wrap twin wire former, an S-wrap twin wire former, or a suction breast roll former.
  • the forming fabric can be any suitable foraminous member, including single layer fabrics, double layer fabrics, triple layer fabrics, photopolymer fabrics, and the like.
  • Non-exhaustive background art in the forming fabric area includes United States Patent Nos.
  • the nascent web may be dewatered on a papermaking felt.
  • Any suitable felt may be used.
  • felts can have double-layer base weaves, triple-layer base weaves, or laminated base weaves.
  • Preferred felts are those having the laminated base weave design.
  • a wet-press-felt which may be particularly useful with the present invention is Vector 3 made by Voith Fabric. Background art in the press felt area includes United States Patent Nos. 5,657,797 ; 5,368,696 ; 4,973,512 ; 5,023,132 ; 5,225,269 ; 5,182,164 ; 5,372,876 ; and 5,618,612 .
  • a differential pressing felt as is disclosed in United States Patent No. 4,533,437 to Curran et al . may likewise be utilized.
  • suitable creping or textured fabrics include single layer or multi-layer, or composite preferably open meshed structures. Fabric construction per se is of less importance than the topography of the creping surface in the creping nip as discussed in more detail below. Long MD knuckles with slightly lowered CD knuckles are greatly preferred for some products.
  • Fabrics may have at least one of the following characteristics: (1) on the side of the creping fabric that is in contact with the wet web (the "top” side), the number of machine direction (MD) strands per inch (mesh) is from 10 to 200 (strands per cm) is from 3.9 to 78.7) and the number of cross-direction (CD) strands per inch (count) is also from 10 to 200 (strands per cm) is also from 3.9 to 78.7); (2) the strand diameter is typically smaller than 0.050 inch (0.127 cm); (3) on the top side, the distance between the highest point of the MD knuckles and the highest point on the CD knuckles is from about 0.001 to about 0.02 or 0.03 inch (from about 0.025 to about 0.51 or 0.76 mm); (4) in between these two levels there can be knuckles formed either by MD or CD strands that give the topography a three dimensional hill/valley appearance which is imparted to the sheet; (5) the fabric may be oriented in any
  • One preferred fabric is a W013 Albany International multilayer fabric.
  • Such fabrics are formed from monofilament polymeric fibers having diameters typically ranging from about 0.25 mm to about 1 mm.
  • Such fabrics are formed from monofilament polymeric fibers having diameters typically ranging from about 10 mm to about 100 mm.
  • This fabric may be used to produce an absorbent cellulosic sheet having variable local basis weight comprising a papermaking fiber reticulum provided with (i) a plurality of cross-machine direction (CD) extending, fiber-enriched pileated regions of relatively high local basis weight interconnected by (ii) a plurality of elongated densified regions of compressed papermaking fibers, the elongated densified regions having relatively low local basis weight and are generally oriented along the machine direction (MD) of the sheet.
  • the elongated densified regions are further characterized by an MD/CD aspect ratio of at least 1.5.
  • the MD/CD aspect ratios of the densified regions are greater than 2 or greater than 3: generally between about 2 and 10.
  • the fiber-enriched, pileated regions have fiber orientation bias along the CD of the sheet and the densified regions of relatively low basis weight extend in the machine direction and also have fiber orientation bias along the CD of the sheet.
  • This product is further described in copending application United States Provisional Patent Application Serial No. 60/808,863, filed May 26, 2006 , entitled “Fabric Creped Absorbent Sheet with Variable Local Basis Weight” (Attorney Docket No. 20179; GP-06-11), the disclosure of which is incorporated herein in its entirety by reference.
  • the creping fabric may be of the class described in United States Patent No. 5,607,551 to Farrington et al. , Cols. 7-8 thereof, as well as the fabrics described in United States Patent No. 4,239,065 to Trokhan and United States Patent No. 3,974,025 to Ayers .
  • Such fabrics may have about 20 to about 60 meshes per inch (about 7.8 to about 23.6 meshes per cm) and are formed from monofilament polymeric fibers having diameters typically ranging from about 0.008 to about 0.025 inches (from about 0.203 to about 0.635 mm). Both warp and weft monofilaments may, but need not necessarily be of the same diameter.
  • the filaments are so woven and complimentarily serpentinely configured in at least the Z-direction (the thickness of the fabric) to provide a first grouping or array of coplanar top-surface-plane crossovers of both sets of filaments; and a predetermined second grouping or array of sub-top-surface crossovers.
  • the arrays are interspersed so that portions of the top-surface-plane crossovers define an array of wicker-basket-like cavities in the top surface of the fabric, which cavities are disposed in staggered relation in both the machine direction (MD) and the cross-machine direction (CD), and so that each cavity spans at least one sub-top-surface crossover.
  • the cavities are discretely perimetrically enclosed in the plan view by a picket-like-lineament comprising portions of a plurality of the top-surface plane crossovers.
  • the loop of fabric may comprise heat set monofilaments of thermoplastic material; the top surfaces of the coplanar top-surface-plane crossovers may be monoplanar flat surfaces.
  • Specific embodiments of the invention include satin weaves as well as hybrid weaves of three or greater sheds, and mesh counts of from about 10 X 10 to about 120 X 120 filaments per inch (4 X 4 to about 47 X 47 per centimeter). Although the preferred range of mesh counts is from about 18 by 16 to about 55 by 48 filaments per inch (9 X 8 to about 22 X 19 per centimeter).
  • a dryer fabric may be used as the creping fabric if so desired. Suitable fabrics are described in United States Patent Nos. 5,449,026 (woven style) and 5,690,149 (stacked MD tape yarn style) to Lee as well as United States Patent No. 4,490,925 to Smith (spiral style).
  • a creping adhesive used on a Yankee cylinder is preferably capable of cooperating with the web at intermediate moisture to facilitate transfer from the creping fabric to the Yankee and to firmly secure the web to the Yankee cylinder as it is dried to a consistency of 95 percent or more on the cylinder, preferably with a high volume drying hood.
  • the adhesive is critical to stable system operation at high production rates and is preferably a hygroscopic, re-wettable, substantially non-cross-linking adhesive in the case of the Fabric Crepe process described herein.
  • preferred adhesives are those which include poly(vinyl alcohol) of the general class described in United States Patent No. 4,528,316 to Soerens et al. Other suitable adhesives are disclosed in co-pending United States Provisional Patent Application Serial No.
  • Suitable adhesives are optionally provided with modifiers and so forth. It is preferred to use cross-linker sparingly or not at all in the adhesive in many cases; such that the resin is substantially non-crosslinkable in use.
  • British handsheets were prepared to a target basis weight of around 60 g/m 2 by treating either a 1:1 unrefined SSWK:SHWK furnish or a 1:1 refined (590 CSF) SSWK: unrefined SHWK furnish sequentially with a debonder, AMRES HP25 (PAE), and carboxymethyl-cellulose (CMC), pressing at 15 psi/5 min (1.03 bar/5 min), drying on a heated drum dryer, and curing in a forced air oven at 105° C/5 min.
  • PES AMRES HP25
  • CMC carboxymethyl-cellulose
  • the debonder was added to the furnish and disintegrated in a British disintegrator for 30 min @ 3 percent consistency, then treated with the PAE followed by CMC between 5 min intervals.
  • the same procedure was used for treatments designated thick stock treatments except the debonder is added to the thick stock after the latter had been disintegrated for 30 min. After adding the debonder the furnish was stirred for 15 min prior to addition of PAE and CMC.
  • the debonders employed were Cartaflex® TNS available from Clariant and an imidazolinium based debonder (referred to as "Type C" debonder in Table 1 below).
  • the Type C quat can either be 1-(2-alkylamidoethyl)-2-alkyl-3-methylimidazolinium methylsulfate or halide or 1-(2-alkylamidoethyl)-2-alkyl-3-ethylimidazolinium ethylsulfate or halide salts; where the content of the Type C quat in the debonder composition ranges from about 10 wt% to about 90 wt% of the debonder composition.
  • Results are seen in Figures 2 and 4 , wherein "Type C” refers to debonder treatment with Type C debonder, “R” means refined pulp; “UR” refers to unrefined pulp, “T” refer to thick stock addition and “P” refers to addition occurring during pulping. Results for refined and unrefined fiber appear in Figure 2 , while results for unrefined furnish appear in Figure 4 .
  • debonder is added to the furnish in a pulper 10 as shown in Figure 6 which is a flow diagram illustrating schematically pulp feed to a papermachine.
  • Debonder is added in pulper 10 while the fiber is at a consistency of anywhere from about 4 percent to about 10 percent, typically around 6 percent. Thereafter, the mixture is pulped after debonder addition for 10 minutes or more before wet strength or dry strength resin is added.
  • the pulped fiber is fed to a machine chest 12 and diluted, typically to a consistency of 3 percent or so. In machine chest 12 other additives, including permanent wet strength resin and dry strength resin, may be added.
  • the wet strength resin and dry strength resin may be added in the pulper or upstream or downstream of the machine chest, i.e., at 14 or 16 ; however, they should be added after debonder as noted above and the dry strength resin is preferably added after the wet strength resin.
  • the furnish may be refined and/or cleaned before or after it is provided to the machine chest as is known in the art.
  • the furnish is further diluted to a consistency of less than 2 percent, generally less than 1 percent and typically 0.1 percent or so and fed forward to a headbox 20 by way of a fan pump 18 .
  • FIG. 7 a schematic diagram of a conventional wet-press (CWP) papermachine 15 with a divided headbox thereby making it possible to produce a stratified product.
  • the product according to the present invention can be made with single or multiple headboxes, 20, 20' and regardless of the number of headboxes may be stratified or unstratified.
  • the treated furnish is transported through different conduits 40 and 41 , where it is delivered to the headbox of papermachine 15 as is well known, although any convenient configuration can be used.
  • Figure 7 shows a web-forming end or wet end with a liquid permeable foraminous support member 11 which may be of any convenient configuration.
  • Foraminous support member 11 may be constructed of any of several known materials including a conventional papermaking felt, fabric or a synthetic filament woven mesh base with a very fine synthetic fiber batt attached to the mesh base.
  • the foraminous support member 11 is supported in a conventional manner on rolls, including breast roll 13 , and pressing roll, 17 .
  • a forming fabric 24 is supported on rolls 19 and 21 which are positioned relative to the breast roll 13 for guiding the forming wire 24 to converge on the foraminous support member 11 at the cylindrical breast roll 13 at an acute angle relative to the foraminous support member 11 .
  • the foraminous support member 11 and the wire 24 move at the same speed and in the same direction which is the direction of rotation of the breast roll 13.
  • the forming wire 24 and the foraminous support member 11 converge at an upper surface of the forming roll 13 to form a wedge-shaped space or nip into which one or more jets of water or foamed liquid fiber dispersion may be injected and trapped between the forming wire 24 and the foraminous support member 11 to force fluid through the wire 24 into a save-all 22 where it is collected for re-use in the process (recycled via line 25 ).
  • the nascent web W formed in the process is carried along the machine direction 30 by the foraminous support member 11 to the pressing roll 17 where the wet nascent web W is transferred to the Yankee dryer 26 . Fluid is pressed from the wet web W by pressing roll 17 as the web is transferred to the Yankee dryer 26 where it is dried and creped by means of a creping blade 27 . The finished web is collected on a take-up reel 28 .
  • a pit 44 is provided for collecting water squeezed from the furnish by the press roll 16 , as well as collecting the water removed from the fabric by a Uhle box 29 .
  • the water collected in pit 44 may be collected into a flow line 45 for separate processing to remove surfactant and fibers from the water and to permit recycling of the water back to the papermaking machine 15 .
  • FIG 8 is a schematic diagram of another wet-press/fabric crepe papermachine 35 having a conventional twin wire forming section 37 , a felt run 34 , a shoe press section 36 , a creping fabric 38 and a Yankee dryer 40 suitable for making sheet used in connection with the present invention.
  • Forming section 37 includes a pair of forming fabrics 42, 44 supported by a plurality of rolls 46, 48, 50, 52, 54, 56 and a forming roll 58 .
  • a headbox 60 provides papermaking furnish in the form of a jet to a nip 62 between forming roll 58 and roll 46 and the fabrics. Control of the jet velocity relative to the forming fabrics is an important aspect of controlling tensile ratio as will be appreciated by one of skill in the art.
  • the furnish forms a nascent web 64 which is dewatered on the fabrics with the assistance of suction, for example, by way of suction box 66 .
  • the nascent web is advanced to a papermaking felt 68 which is supported by a plurality of rolls 70, 72, 74, 75 and the felt is in contact with a shoe press roll 76 .
  • the web is of low consistency as it is transferred to the felt. Transfer may be assisted by suction; for example roll 70 may be a suction roll if so desired or a pickup or suction shoe as is known in the art.
  • Transfer roll 80 may be a heated roll if so desired.
  • roll 76 could be a conventional suction pressure roll.
  • roll 74 is a suction roll effective to remove water from the felt prior to the felt entering the shoe press nip since water from the furnish will be pressed into the felt in the shoe press nip.
  • using a suction roll or STR at 74 is typically desirable to ensure the web remains in contact with the felt during the direction change as one of skill in the art will appreciate from the diagram.
  • Web 64 is wet-pressed on the felt in nip 78 with the assistance of pressure shoe 82 .
  • the web is thus compactively dewatered at 78 , typically by increasing the consistency by 15 or more points at this stage of the process.
  • the configuration shown at 78 is generally termed a shoe press; in connection with the present invention cylinder 80 is operative as a transfer cylinder which operates to convey web 64 at high speed, typically 1000 fpm-6000 fpm (305 m/min-1830 m/min) to the creping fabric.
  • Cylinder 80 has a smooth surface 84 which may be provided with adhesive and/or release agents if needed. Web 64 is adhered to transfer surface 84 of cylinder 80 which is rotating at a high angular velocity as the web continues to advance in the machine-direction indicated by arrows 86 . On the cylinder, web 64 has a generally random apparent distribution of fiber.
  • Direction 86 is referred to as the machine-direction (MD) of the web as well as that of papermachine 35 ; whereas the cross-machine-direction (CD) is the direction in the plane of the web perpendicular to the MD.
  • MD machine-direction
  • CD cross-machine-direction
  • Web 64 enters nip 78 typically at consistencies of 10-25 percent or so and is dewatered and dried to consistencies of from about 25 to about 70 percent by the time it is transferred to creping fabric 38 as shown in the diagram.
  • Fabric 38 is supported on a plurality of rolls 88, 90, 92 and a press nip roll or solid pressure roll 94 such that there is formed a fabric crepe nip 96 with transfer cylinder 80 as shown in the diagram.
  • the creping fabric defines a creping nip over the distance in which creping fabric 38 is adapted to contact roll 80 ; that is, applies significant pressure to the web against the transfer cylinder.
  • backing (or creping) roll 90 may be provided with a soft deformable surface which will increase the width of the creping nip and increase the fabric creping angle between the fabric and the sheet and the point of contact or a shoe press roll could be used as roll 90 to increase effective contact with the web in high impact fabric creping nip 96 where web 64 is transferred to fabric 38 and advanced in the machine-direction.
  • the creping nip parameters can influence the distribution of fiber in the web in a variety of directions, including inducing changes in the z-direction as well as the MD and CD.
  • the transfer from the transfer cylinder to the creping fabric is high impact in that the fabric is traveling slower than the web and a significant velocity change occurs.
  • the web is creped anywhere from 10-60 percent and even higher during transfer from the transfer cylinder to the fabric.
  • Creping nip 96 generally extends over a fabric creping nip width of anywhere from about 1/8" to about 2", typically 1 ⁇ 2" to 2" (from about 0.32 cm to about 5.08 cm, typically 1.27 cm to 5.08 cm). For a creping fabric with 32 CD strands per inch (12.6 CD strands per cm), web 64 thus will encounter anywhere from about 4 to 64 weft filaments in the nip.
  • nip pressure in nip 96 that is, the loading between backing roll 90 and transfer roll 80 is suitably 20-100, preferably 40-70 pounds per linear inch (PLI) (suitably 3.6-35.7 kglcm, preferably 7.1-12.5 kg per linear cm (kglcm).
  • PKI pounds per linear inch
  • nip 102 transfers at nip 102 occurs at a web consistency of generally from about 25 to about 70 percent. At these consistencies, it is difficult to adhere the web to surface 104 of cylinder 100 firmly enough to remove the web from the fabric thoroughly.
  • a poly(vinyl alcohol)/polyamide adhesive composition as noted above is applied at 106 as needed.
  • a suction box may be employed at 87 in order to increase caliper.
  • suction of from about 5 to about 30 inches of mercury (from about 1.7 x 10 4 to about 1.0 x 10 5 Pascal) is employed.
  • the web is dried on Yankee cylinder 100 which is a heated cylinder and by high jet velocity impingement air in Yankee hood 108 .
  • Yankee cylinder 100 which is a heated cylinder and by high jet velocity impingement air in Yankee hood 108 .
  • creping doctor (blade) 109 As the cylinder rotates, web 64 is creped from the cylinder by creping doctor (blade) 109 and wound on a take-up reel 110 .
  • Creping of the paper from a Yankee dryer may be carried out using an undulatory creping blade, such as that disclosed in United States Patent No. 5,690,788, the disclosure of which is incorporated by reference.
  • Use of the undulatory crepe blade has been shown to impart several advantages when used in production of tissue products. In general, tissue products creped using an undulatory blade have higher caliper (thickness), increased CD stretch, and a higher void volume than do comparable tissue products produced using conventional crepe blades. All of these changes effected by use of the undulatory blade tend to correlate
  • calender station 105 with rolls 105(a) , 105(b) to calender the sheet, if so desired.
  • Impingement air dryers are disclosed in the following patents and applications, the disclosure of which is incorporated herein by reference:
  • the high levels of debonder employed did not interfere with adhesion to the transfer cylinder or the Yankee dryer or cause other processing difficulties.
  • the invention accordingly enables wet/dry CD tensile ratios increase of up to nearly 100 percent in commercial wet-press towel operations.
  • a method of making absorbent cellulosic sheet with increased wet/dry CD tensile ratio comprising: a) preparing an aqueous furnish consisting essentially of cellulosic papermaking fibers in aqueous suspension having a consistency of greater than 2 percent, wherein the papermaking fiber includes Kraft softwood fiber in an amount of at least 25 percent by weight of fiber; b) treating the aqueous furnish at greater than 2 percent consistency with from about 5 lbs of debonder per ton (about 2.5 kg of debonder per mton) of papermaking fiber to about 30 lbs of debonder per ton (about 15 kg of debonder per mton) of papermaking fiber; c) typically, subsequent to the step of treating the aqueous furnish at greater than 2 percent consistency with debonder, adding a permanent wet strength resin to the aqueous furnish in an amount of from about 5 lbs of permanent wet strength per ton of papermaking
  • the steps of dewatering, wet-pressing and drying the web as well as the jet to wire velocity delta are controlled and the furnish, debonder, dry strength resin and permanent wet strength resin are selected and utilized in amounts such that the absorbent cellulosic sheet has a wet/dry CD tensile ratio of greater than 30 percent.
  • CD wet/dry tensile ratios are typically between about 35 percent and 60 percent; greater than 40 percent or 45 percent in suitable embodiments when CMC dry strength resin is used.
  • MD/CD dry tensile ratios of less than 1.5 or less than about 1 are achieved in connection with CWP processes. In FC processes, MD/CD dry tensile ratios of less than 0.75 or less than 0.5 are readily achieved.
  • the furnish is treated with from about 10 lbs of debonder per ton of papermaking fiber to about 20 lbs of debonder per ton of papermaking fiber (about 5 kg of debonder per mton of papermaking fiber to about 10 kg of debonder per mton of papermaking fiber) and the aqueous furnish is treated with debonder at a consistency of greater than 3 percent or 4 percent; typically between about 3 percent and up to about 8 to 10 percent consistency.
  • Dry strength resin is optionally added in an amount of from about 2.5 lbs of dry strength resin per ton of papermaking filler to about 10 lbs of dry strength resin per ton of papermaking fiber (about 1.25 kg of dry strength resin per mton of papermaking filler to about 5 kg of dry strength resin per mton of papermaking fiber).
  • One preferred dry strength resin is carboxymethyl cellulose.
  • the permanent wet strength resin is added to the furnish in an amount of from about 5 lbs per ton of papermaking fiber to about 40 lbs per ton of papermaking fiber (about 2.5 kg per mton of papermaking fiber to about 20 kg per mton of papermaking fiber); perhaps more preferably, the permanent wet strength resin is added to the furnish in an amount of from about 10 lbs per ton of papermaking fiber to about 30 lbs per ton of papermaking fiber (about 5 kg per mton of papermaking fiber to about 15 kg per mton of papermaking fiber).
  • Some processes of the invention include refining at least a portion of the papermaking fiber as well as the step of blending the debonder-treated aqueous furnish with another aqueous furnish containing papermaking fiber.
  • Various processes of the invention include one or more of the following features: (a) at least 50 percent by weight of the papermaking fiber in the sheet is pretreated with debonder; (b) at least 75 percent by weight of the papermaking fiber in the sheet is pretreated with debonder; (c) at least 90 percent by weight of the papermaking fiber in the sheet is pretreated with debonder; (d) the papermaking furnish comprises recycle fiber; (e) the recycle fiber comprises predominantly low yield recycle fiber as opposed to groundwood; (f) substantially all Kraft softwood fiber in the sheet is treated with debonder; (g) the rotating cylinder is a rotating heated cylinder whereupon the web is dried and the process further includes the step of creping the web form the heated cylinder with a creping doctor at reel crepe of from about 2 percent to about 25 percent; (h) the dried web is creped from the heated cylinder with a creping doctor at a reel crepe of from about 5 percent to about 20 percent; (i) the softwood pulp is treated with debonder for at least 10 minutes at a consistency
  • a method of making absorbent cellulosic sheet with increased wet/dry CD tensile ratio comprising: a) preparing an aqueous furnish consisting essentially of cellulosic papermaking fibers in aqueous suspension having a consistency of greater than 2 percent; b) treating the aqueous furnish at greater than 2 percent consistency, preferably greater than 5 percent consistency with from about 5 lbs of debonder per ton of papermaking fiber to about 30 lbs of debonder per ton of papermaking fiber (about 2.5 kg of debonder per mton of papermaking fiber to about 15 kg of debonder per mton of papermaking fiber); c) subsequent to the step of treating the aqueous furnish at greater than 2 percent consistency with debonder, adding a permanent wet strength resin to the aqueous furnish in an amount of from about 5 lbs of permanent wet strength per ton of papermaking fiber to about 50 lbs of permanent wet strength resin per ton of papermaking fiber (about 2.5
  • the web is creped from the transfer surface at a Belt Crepe of between 2 percent and 80 percent; for towel used in electronic dispensers the web is creped from the transfer surface at a Belt Crepe of between 3 percent and 8 percent. In other cases, the web is creped from the transfer surface at a Belt Crepe of at least 10 percent or more such as wherein the web is creped from the transfer surface at a Belt Crepe of at least 20 percent, 30 percent, or the web is creped from the transfer surface at a Belt Crepe of at least 50 percent.
  • mixtures of Kraft hardwood and softwood fibers are employed, such as wherein the fiber in the aqueous furnish is at least 75 percent by weight Kraft papermaking fiber; or wherein the fiber in the aqueous furnish is at least 90 percent by weight Kraft papermaking fiber; and/or wherein the papermaking fiber in the aqueous furnish is at least about 40 percent or 50 percent by weight Kraft softwood fiber. In still other embodiments, the papermaking fiber in the aqueous furnish is at least about 60 or 70 percent by weight Kraft softwood fiber.
  • Kraft softwood fiber employed has a length weighted average fiber length of greater than 1 mm; whereas typically, Kraft softwood fiber has a length weighted average fiber length of greater than 1.5 mm. In most cases, the Kraft softwood fiber has a length weighted average fiber length of between about 1.5 mm and about 3 mm.

Landscapes

  • Paper (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
EP16169404.7A 2006-10-10 2007-10-05 Verfahren zur herstellung von absorbierendes blatt mit erhöhtem nass/trocken cd verhältniss Active EP3073011B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16169404T PL3073011T3 (pl) 2006-10-10 2007-10-05 Sposób wytwarzania arkusza chłonnego o zwiększonym stosunku rozciągania cd na mokro/na sucho

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US85068106P 2006-10-10 2006-10-10
US11/867,113 US7585392B2 (en) 2006-10-10 2007-10-04 Method of producing absorbent sheet with increased wet/dry CD tensile ratio
EP07853783.4A EP2074259B1 (de) 2006-10-10 2007-10-05 Verfahren zur herstellung eines saugfähigen papiers mit erhöhtem nass/trocken-querspannungsverhältnis
PCT/US2007/080513 WO2008045770A2 (en) 2006-10-10 2007-10-05 Method of producing absorbent sheet with increased wet/dry cd tensile ratio

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP07853783.4A Division EP2074259B1 (de) 2006-10-10 2007-10-05 Verfahren zur herstellung eines saugfähigen papiers mit erhöhtem nass/trocken-querspannungsverhältnis
EP07853783.4A Division-Into EP2074259B1 (de) 2006-10-10 2007-10-05 Verfahren zur herstellung eines saugfähigen papiers mit erhöhtem nass/trocken-querspannungsverhältnis

Publications (2)

Publication Number Publication Date
EP3073011A1 true EP3073011A1 (de) 2016-09-28
EP3073011B1 EP3073011B1 (de) 2018-08-01

Family

ID=39274122

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16169404.7A Active EP3073011B1 (de) 2006-10-10 2007-10-05 Verfahren zur herstellung von absorbierendes blatt mit erhöhtem nass/trocken cd verhältniss
EP07853783.4A Active EP2074259B1 (de) 2006-10-10 2007-10-05 Verfahren zur herstellung eines saugfähigen papiers mit erhöhtem nass/trocken-querspannungsverhältnis

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP07853783.4A Active EP2074259B1 (de) 2006-10-10 2007-10-05 Verfahren zur herstellung eines saugfähigen papiers mit erhöhtem nass/trocken-querspannungsverhältnis

Country Status (10)

Country Link
US (2) US7585392B2 (de)
EP (2) EP3073011B1 (de)
CA (2) CA2665082C (de)
CY (1) CY1117892T1 (de)
ES (2) ES2685874T3 (de)
HU (2) HUE040187T2 (de)
PL (2) PL3073011T3 (de)
PT (1) PT2074259T (de)
SI (1) SI2074259T1 (de)
WO (1) WO2008045770A2 (de)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7588660B2 (en) * 2002-10-07 2009-09-15 Georgia-Pacific Consumer Products Lp Wet-pressed tissue and towel products with elevated CD stretch and low tensile ratios made with a high solids fabric crepe process
US8911592B2 (en) 2002-10-07 2014-12-16 Georgia-Pacific Consumer Products Lp Multi-ply absorbent sheet of cellulosic fibers
US7442278B2 (en) 2002-10-07 2008-10-28 Georgia-Pacific Consumer Products Lp Fabric crepe and in fabric drying process for producing absorbent sheet
CN100465375C (zh) * 2002-10-07 2009-03-04 福特詹姆斯公司 制造吸收性片材用的织物起绉方法
US7789995B2 (en) 2002-10-07 2010-09-07 Georgia-Pacific Consumer Products, LP Fabric crepe/draw process for producing absorbent sheet
US7662257B2 (en) 2005-04-21 2010-02-16 Georgia-Pacific Consumer Products Llc Multi-ply paper towel with absorbent core
US7494563B2 (en) 2002-10-07 2009-02-24 Georgia-Pacific Consumer Products Lp Fabric creped absorbent sheet with variable local basis weight
US7585389B2 (en) * 2005-06-24 2009-09-08 Georgia-Pacific Consumer Products Lp Method of making fabric-creped sheet for dispensers
US8293072B2 (en) 2009-01-28 2012-10-23 Georgia-Pacific Consumer Products Lp Belt-creped, variable local basis weight absorbent sheet prepared with perforated polymeric belt
US7503998B2 (en) 2004-06-18 2009-03-17 Georgia-Pacific Consumer Products Lp High solids fabric crepe process for producing absorbent sheet with in-fabric drying
DE102005060379A1 (de) * 2005-12-16 2007-06-21 Voith Patent Gmbh Vorrichutng und Verfahren zur Behandlung einer Faserstoffbahn, insbesondere zur Herstellung einer Tissuepapierbahn
HUE032292T2 (en) * 2006-01-25 2017-09-28 Georgia Pacific Consumer Products Lp Machine for the production of fiber web
US8187421B2 (en) 2006-03-21 2012-05-29 Georgia-Pacific Consumer Products Lp Absorbent sheet incorporating regenerated cellulose microfiber
US8540846B2 (en) 2009-01-28 2013-09-24 Georgia-Pacific Consumer Products Lp Belt-creped, variable local basis weight multi-ply sheet with cellulose microfiber prepared with perforated polymeric belt
US7718036B2 (en) * 2006-03-21 2010-05-18 Georgia Pacific Consumer Products Lp Absorbent sheet having regenerated cellulose microfiber network
US8187422B2 (en) 2006-03-21 2012-05-29 Georgia-Pacific Consumer Products Lp Disposable cellulosic wiper
US7585392B2 (en) * 2006-10-10 2009-09-08 Georgia-Pacific Consumer Products Lp Method of producing absorbent sheet with increased wet/dry CD tensile ratio
US7951264B2 (en) 2007-01-19 2011-05-31 Georgia-Pacific Consumer Products Lp Absorbent cellulosic products with regenerated cellulose formed in-situ
SE530972C2 (sv) * 2007-03-01 2008-11-04 Metso Paper Inc Fördelningsenhet i en inloppslåda till en avvattningspress och dess användning
US8273286B2 (en) * 2007-09-10 2012-09-25 Fram Jerry R Positive pressure shear impregnator and wetout
WO2010033536A2 (en) 2008-09-16 2010-03-25 Dixie Consumer Products Llc Food wrap basesheet with regenerated cellulose microfiber
DE102010016864B4 (de) * 2010-05-10 2018-09-27 Papierfabrik Julius Schulte Söhne GmbH & Co. KG Faserstoffhaltiges Kernpapier, Verfahren zu dessen Herstellung und dessen Verwendung
US8980050B2 (en) 2012-08-20 2015-03-17 Celanese International Corporation Methods for removing hemicellulose
JP5649632B2 (ja) 2012-05-02 2015-01-07 山田　菊夫 水解紙の製造方法
US20140048221A1 (en) 2012-08-20 2014-02-20 Celanese International Corporation Methods for extracting hemicellulose from a cellulosic material
AU2014342537B2 (en) * 2013-10-31 2018-03-15 Kimberly-Clark Worldwide, Inc. Durable creped tissue
US9952160B2 (en) * 2014-04-04 2018-04-24 Packaging Corporation Of America System and method for determining an impact of manufacturing processes on the caliper of a sheet material
EP3150371B1 (de) 2014-05-30 2019-12-04 Kikuo Yamada Faserbahn
MA40758A (fr) * 2014-09-25 2017-08-01 Georgia Pacific Consumer Products Lp Procédés de fabrication de produits de papier à l'aide d'une courroie de crêpage multicouche et produits de papier fabriqués à l'aide d'une courroie de crêpage multicouche
BR122022004547B1 (pt) * 2014-09-25 2022-10-11 Gpcp Ip Holdings Llc Folha absorvente de fibras celulósicas que tem um lado superior e um lado inferior
US9822285B2 (en) 2015-01-28 2017-11-21 Gpcp Ip Holdings Llc Glue-bonded multi-ply absorbent sheet
US10774476B2 (en) 2016-01-19 2020-09-15 Gpcp Ip Holdings Llc Absorbent sheet tail-sealed with nanofibrillated cellulose-containing tail-seal adhesives
US10697123B2 (en) 2017-01-17 2020-06-30 Gpcp Ip Holdings Llc Zwitterionic imidazolinium surfactant and use in the manufacture of absorbent paper
US10895038B2 (en) 2017-05-31 2021-01-19 Gpcp Ip Holdings Llc High consistency re-pulping method, apparatus and absorbent products incorporating recycled fiber
US11035078B2 (en) 2018-03-07 2021-06-15 Gpcp Ip Holdings Llc Low lint multi-ply paper products having a first stratified base sheet and a second stratified base sheet
CN110361804B (zh) * 2018-04-09 2022-11-04 日东电工株式会社 偏振片的制造方法
US11124920B2 (en) 2019-09-16 2021-09-21 Gpcp Ip Holdings Llc Tissue with nanofibrillar cellulose surface layer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844880A (en) * 1971-01-21 1974-10-29 Scott Paper Co Sequential addition of a cationic debonder, resin and deposition aid to a cellulosic fibrous slurry
US4849054A (en) * 1985-12-04 1989-07-18 James River-Norwalk, Inc. High bulk, embossed fiber sheet material and apparatus and method of manufacturing the same
US5785813A (en) * 1997-02-24 1998-07-28 Kimberly-Clark Worldwide Inc. Method of treating a papermaking furnish for making soft tissue
US20040238135A1 (en) * 2002-10-07 2004-12-02 Edwards Steven L. Fabric crepe process for making absorbent sheet
US20050241786A1 (en) * 2002-10-07 2005-11-03 Edwards Steven L Wet-pressed tissue and towel products with elevated CD stretch and low tensile ratios made with a high solids fabric crepe process

Family Cites Families (83)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2944931A (en) * 1957-12-13 1960-07-12 Crown Zellerbach Corp Sanitary paper and process of making the same
US3151017A (en) * 1962-07-27 1964-09-29 Beloit Corp Selected treatment of fiber blends with resins
US3556932A (en) * 1965-07-12 1971-01-19 American Cyanamid Co Water-soluble,ionic,glyoxylated,vinylamide,wet-strength resin and paper made therewith
US3432936A (en) * 1967-05-31 1969-03-18 Scott Paper Co Transpiration drying and embossing of wet paper webs
US3556933A (en) * 1969-04-02 1971-01-19 American Cyanamid Co Regeneration of aged-deteriorated wet strength resins
US3772076A (en) * 1970-01-26 1973-11-13 Hercules Inc Reaction products of epihalohydrin and polymers of diallylamine and their use in paper
US3700623A (en) * 1970-04-22 1972-10-24 Hercules Inc Reaction products of epihalohydrin and polymers of diallylamine and their use in paper
US3974025A (en) * 1974-04-01 1976-08-10 The Procter & Gamble Company Absorbent paper having imprinted thereon a semi-twill, fabric knuckle pattern prior to final drying
US4125659A (en) * 1976-06-01 1978-11-14 American Can Company Patterned creping of fibrous products
US4144122A (en) * 1976-10-22 1979-03-13 Berol Kemi Ab Quaternary ammonium compounds and treatment of cellulose pulp and paper therewith
US4239065A (en) * 1979-03-09 1980-12-16 The Procter & Gamble Company Papermachine clothing having a surface comprising a bilaterally staggered array of wicker-basket-like cavities
US4448638A (en) * 1980-08-29 1984-05-15 James River-Dixie/Northern, Inc. Paper webs having high bulk and absorbency and process and apparatus for producing the same
US4482429A (en) * 1980-08-29 1984-11-13 James River-Norwalk, Inc. Paper webs having high bulk and absorbency and process and apparatus for producing the same
US4610743A (en) * 1980-08-29 1986-09-09 James River-Norwalk, Inc. Pattern bonding and creping of fibrous substrates to form laminated products
US4507173A (en) * 1980-08-29 1985-03-26 James River-Norwalk, Inc. Pattern bonding and creping of fibrous products
US4441962A (en) * 1980-10-15 1984-04-10 The Procter & Gamble Company Soft, absorbent tissue paper
US4447294A (en) * 1981-12-30 1984-05-08 The Procter & Gamble Company Process for making absorbent tissue paper with high wet strength and low dry strength
US4533437A (en) * 1982-11-16 1985-08-06 Scott Paper Company Papermaking machine
US4490925A (en) * 1983-06-08 1985-01-01 Wangner Systems Corporation Low permeability spiral fabric and method
US4529480A (en) * 1983-08-23 1985-07-16 The Procter & Gamble Company Tissue paper
US4720383A (en) * 1986-05-16 1988-01-19 Quaker Chemical Corporation Softening and conditioning fibers with imidazolinium compounds
US4834838A (en) * 1987-02-20 1989-05-30 James River Corporation Fibrous tape base material
US4940513A (en) * 1988-12-05 1990-07-10 The Procter & Gamble Company Process for preparing soft tissue paper treated with noncationic surfactant
US5199467A (en) * 1990-06-06 1993-04-06 Asten Group, Inc. Papermakers fabric with stacked machine direction yarns
US5223096A (en) * 1991-11-01 1993-06-29 Procter & Gamble Company Soft absorbent tissue paper with high permanent wet strength
US5262007A (en) * 1992-04-09 1993-11-16 Procter & Gamble Company Soft absorbent tissue paper containing a biodegradable quaternized amine-ester softening compound and a temporary wet strength resin
US5264082A (en) * 1992-04-09 1993-11-23 Procter & Gamble Company Soft absorbent tissue paper containing a biodegradable quaternized amine-ester softening compound and a permanent wet strength resin
US5501768A (en) * 1992-04-17 1996-03-26 Kimberly-Clark Corporation Method of treating papermaking fibers for making tissue
US5279767A (en) * 1992-10-27 1994-01-18 The Procter & Gamble Company Chemical softening composition useful in fibrous cellulosic materials
US5312522A (en) * 1993-01-14 1994-05-17 Procter & Gamble Company Paper products containing a biodegradable chemical softening composition
US5607551A (en) * 1993-06-24 1997-03-04 Kimberly-Clark Corporation Soft tissue
US6074527A (en) * 1994-06-29 2000-06-13 Kimberly-Clark Worldwide, Inc. Production of soft paper products from coarse cellulosic fibers
US6001218A (en) * 1994-06-29 1999-12-14 Kimberly-Clark Worldwide, Inc. Production of soft paper products from old newspaper
US5415737A (en) * 1994-09-20 1995-05-16 The Procter & Gamble Company Paper products containing a biodegradable vegetable oil based chemical softening composition
US5573637A (en) * 1994-12-19 1996-11-12 The Procter & Gamble Company Tissue paper product comprising a quaternary ammonium compound, a polysiloxane compound and binder materials
FI102623B1 (fi) * 1995-10-04 1999-01-15 Valmet Corp Menetelmä ja laite paperikoneessa
US6059928A (en) * 1995-09-18 2000-05-09 Fort James Corporation Prewettable high softness paper product having temporary wet strength
US5690790A (en) * 1996-03-28 1997-11-25 The Procter & Gamble Company Temporary wet strength paper
US6119362A (en) * 1996-06-19 2000-09-19 Valmet Corporation Arrangements for impingement drying and/or through-drying of a paper or material web
DE69732038T2 (de) * 1996-07-18 2005-11-03 Kao Corp. Füllstoffe für papier
US5968590A (en) * 1996-09-20 1999-10-19 Valmet Corporation Method for drying a surface-treated paper web in an after-dryer of a paper machine and after-dryer of a paper machine
US6001421A (en) * 1996-12-03 1999-12-14 Valmet Corporation Method for drying paper and a dry end of a paper machine
US5935383A (en) * 1996-12-04 1999-08-10 Kimberly-Clark Worldwide, Inc. Method for improved wet strength paper
US6033523A (en) * 1997-03-31 2000-03-07 Fort James Corporation Method of making soft bulky single ply tissue
US5851353A (en) * 1997-04-14 1998-12-22 Kimberly-Clark Worldwide, Inc. Method for wet web molding and drying
US6146494A (en) * 1997-06-12 2000-11-14 The Procter & Gamble Company Modified cellulosic fibers and fibrous webs containing these fibers
US6149769A (en) * 1998-06-03 2000-11-21 The Procter & Gamble Company Soft tissue having temporary wet strength
CA2676732C (en) * 1998-06-12 2014-04-15 Georgia-Pacific Consumer Products Lp Method of making a paper web having a high internal void volume of secondary fibers and a product made by the process
US6344109B1 (en) * 1998-12-18 2002-02-05 Bki Holding Corporation Softened comminution pulp
US6969443B1 (en) * 1998-12-21 2005-11-29 Fort James Corporation Method of making absorbent sheet from recycle furnish
US6245197B1 (en) * 1999-10-20 2001-06-12 Fort James Corporation Tissue paper products prepared with an ion-paired softener
US6432267B1 (en) * 1999-12-16 2002-08-13 Georgia-Pacific Corporation Wet crepe, impingement-air dry process for making absorbent sheet
US6447640B1 (en) * 2000-04-24 2002-09-10 Georgia-Pacific Corporation Impingement air dry process for making absorbent sheet
US6413363B1 (en) * 2000-06-30 2002-07-02 Kimberly-Clark Worldwide, Inc. Method of making absorbent tissue from recycled waste paper
WO2002002869A2 (en) * 2000-06-30 2002-01-10 Kimberly-Clark Worldwide, Inc. Method for making tissue paper
US6497789B1 (en) * 2000-06-30 2002-12-24 Kimberly-Clark Worldwide, Inc. Method for making tissue sheets on a modified conventional wet-pressed machine
US6797117B1 (en) * 2000-11-30 2004-09-28 The Procter & Gamble Company Low viscosity bilayer disrupted softening composition for tissue paper
US6365000B1 (en) * 2000-12-01 2002-04-02 Fort James Corporation Soft bulky multi-ply product and method of making the same
US6582560B2 (en) * 2001-03-07 2003-06-24 Kimberly-Clark Worldwide, Inc. Method for using water insoluble chemical additives with pulp and products made by said method
US6896768B2 (en) * 2001-04-27 2005-05-24 Fort James Corporation Soft bulky multi-ply product and method of making the same
US6673205B2 (en) * 2001-05-10 2004-01-06 Fort James Corporation Use of hydrophobically modified polyaminamides with polyethylene glycol esters in paper products
US6461476B1 (en) * 2001-05-23 2002-10-08 Kimberly-Clark Worldwide, Inc. Uncreped tissue sheets having a high wet:dry tensile strength ratio
US20040045687A1 (en) * 2002-09-11 2004-03-11 Shannon Thomas Gerard Method for using water insoluble chemical additives with pulp and products made by said method
US7662257B2 (en) * 2005-04-21 2010-02-16 Georgia-Pacific Consumer Products Llc Multi-ply paper towel with absorbent core
US7494563B2 (en) * 2002-10-07 2009-02-24 Georgia-Pacific Consumer Products Lp Fabric creped absorbent sheet with variable local basis weight
US7585389B2 (en) * 2005-06-24 2009-09-08 Georgia-Pacific Consumer Products Lp Method of making fabric-creped sheet for dispensers
US7442278B2 (en) * 2002-10-07 2008-10-28 Georgia-Pacific Consumer Products Lp Fabric crepe and in fabric drying process for producing absorbent sheet
US7789995B2 (en) * 2002-10-07 2010-09-07 Georgia-Pacific Consumer Products, LP Fabric crepe/draw process for producing absorbent sheet
US6818101B2 (en) * 2002-11-22 2004-11-16 The Procter & Gamble Company Tissue web product having both fugitive wet strength and a fiber flexibilizing compound
US6936136B2 (en) * 2002-12-31 2005-08-30 Kimberly-Clark Worldwide, Inc. Amino-functionalized pulp fibers
US7041197B2 (en) * 2003-04-15 2006-05-09 Fort James Corporation Wet strength and softness enhancement of paper products
US6991706B2 (en) * 2003-09-02 2006-01-31 Kimberly-Clark Worldwide, Inc. Clothlike pattern densified web
US7758723B2 (en) * 2003-12-19 2010-07-20 The Procter + Gamble Company Processes for foreshortening fibrous structures
US7229528B2 (en) * 2003-12-19 2007-06-12 The Procter & Gamble Company Processes for foreshortening fibrous structures
US7503998B2 (en) * 2004-06-18 2009-03-17 Georgia-Pacific Consumer Products Lp High solids fabric crepe process for producing absorbent sheet with in-fabric drying
US7416637B2 (en) * 2004-07-01 2008-08-26 Georgia-Pacific Consumer Products Lp Low compaction, pneumatic dewatering process for producing absorbent sheet
US8178025B2 (en) * 2004-12-03 2012-05-15 Georgia-Pacific Consumer Products Lp Embossing system and product made thereby with both perforate bosses in the cross machine direction and a macro pattern
US20070062656A1 (en) * 2005-09-20 2007-03-22 Fort James Corporation Linerboard With Enhanced CD Strength For Making Boxboard
US7972474B2 (en) * 2005-12-13 2011-07-05 Kimberly-Clark Worldwide, Inc. Tissue products having enhanced cross-machine directional properties
US7850823B2 (en) * 2006-03-06 2010-12-14 Georgia-Pacific Consumer Products Lp Method of controlling adhesive build-up on a yankee dryer
US7585392B2 (en) * 2006-10-10 2009-09-08 Georgia-Pacific Consumer Products Lp Method of producing absorbent sheet with increased wet/dry CD tensile ratio
US7951264B2 (en) * 2007-01-19 2011-05-31 Georgia-Pacific Consumer Products Lp Absorbent cellulosic products with regenerated cellulose formed in-situ
US7608164B2 (en) * 2007-02-27 2009-10-27 Georgia-Pacific Consumer Products Lp Fabric-crepe process with prolonged production cycle and improved drying

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844880A (en) * 1971-01-21 1974-10-29 Scott Paper Co Sequential addition of a cationic debonder, resin and deposition aid to a cellulosic fibrous slurry
US4849054A (en) * 1985-12-04 1989-07-18 James River-Norwalk, Inc. High bulk, embossed fiber sheet material and apparatus and method of manufacturing the same
US5785813A (en) * 1997-02-24 1998-07-28 Kimberly-Clark Worldwide Inc. Method of treating a papermaking furnish for making soft tissue
US20040238135A1 (en) * 2002-10-07 2004-12-02 Edwards Steven L. Fabric crepe process for making absorbent sheet
US20050241786A1 (en) * 2002-10-07 2005-11-03 Edwards Steven L Wet-pressed tissue and towel products with elevated CD stretch and low tensile ratios made with a high solids fabric crepe process

Also Published As

Publication number Publication date
HUE029815T2 (en) 2017-03-28
HUE040187T2 (hu) 2019-02-28
EP2074259B1 (de) 2016-06-22
US7585392B2 (en) 2009-09-08
WO2008045770A2 (en) 2008-04-17
US20100006249A1 (en) 2010-01-14
PL3073011T3 (pl) 2018-10-31
ES2685874T3 (es) 2018-10-11
EP2074259A2 (de) 2009-07-01
US7951266B2 (en) 2011-05-31
CA2665082C (en) 2016-02-09
ES2586103T3 (es) 2016-10-11
CA2665082A1 (en) 2008-04-17
PT2074259T (pt) 2016-07-27
WO2008045770A3 (en) 2008-06-05
CA2901855A1 (en) 2008-04-17
CA2901855C (en) 2017-11-21
CY1117892T1 (el) 2017-05-17
US20080083519A1 (en) 2008-04-10
PL2074259T3 (pl) 2016-10-31
EP2074259A4 (de) 2012-07-25
SI2074259T1 (sl) 2017-07-31
EP3073011B1 (de) 2018-08-01

Similar Documents

Publication Publication Date Title
EP2074259B1 (de) Verfahren zur herstellung eines saugfähigen papiers mit erhöhtem nass/trocken-querspannungsverhältnis
US9279219B2 (en) Multi-ply absorbent sheet of cellulosic fibers
US7820008B2 (en) Fabric creped absorbent sheet with variable local basis weight
US8409404B2 (en) Multi-ply paper towel with creped plies
EP1907625B1 (de) Tuchgekrepptes blatt für automaten
EP2035220B1 (de) Gekreppte absorbierende stoffbahn mit veränderlichem lokalem flächengewicht

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AC Divisional application: reference to earlier application

Ref document number: 2074259

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

17P Request for examination filed

Effective date: 20170328

RBV Designated contracting states (corrected)

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20180302

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GPCP IP HOLDINGS LLC

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AC Divisional application: reference to earlier application

Ref document number: 2074259

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1024451

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180815

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602007055625

Country of ref document: DE

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2685874

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20181011

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181101

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181102

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181201

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180801

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E040187

Country of ref document: HU

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180801

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180801

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602007055625

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180801

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180801

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20181031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181005

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180801

26N No opposition filed

Effective date: 20190503

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181031

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180801

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181005

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181005

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180801

REG Reference to a national code

Ref country code: AT

Ref legal event code: UEP

Ref document number: 1024451

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180801

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230528

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20230915

Year of fee payment: 17

Ref country code: IT

Payment date: 20230913

Year of fee payment: 17

Ref country code: CZ

Payment date: 20230919

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20230830

Year of fee payment: 17

Ref country code: PL

Payment date: 20230905

Year of fee payment: 17

Ref country code: FR

Payment date: 20230911

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20231106

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20231004

Year of fee payment: 17

Ref country code: HU

Payment date: 20230926

Year of fee payment: 17

Ref country code: FI

Payment date: 20231011

Year of fee payment: 17

Ref country code: DE

Payment date: 20230830

Year of fee payment: 17

Ref country code: AT

Payment date: 20230925

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20240829

Year of fee payment: 18